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G. H. BABGOCK & G. P. HIGGINS. DRUM HEAD AND MANIFOLD FOR SBOTIONALSTEAM-GENERATORS.

Nd. 368,565. Patented Au 23, 188?.

UNITED STATES PATENT UEETEE.

GEORGE H. BABOOOK, OF PLAINFIELD, NEW JERSEY, AND CAMPBELL 1 HIGGINS, OEBROOKLYN, NEw YORK.

DRUM-HEAD AND MANIFOLD FOR SECTIONAL STEAM-GENERATORS.

SPECIFICATION forming part of Letters Patent No. 368,565, dated August23, 1887.

. Application filed March 3, 188"]. Serial No. 229.585. (N0 model.)

To all whom it may concern.-

Be it known that we, GEORGE H. BABoooK, residing atFlainfield, county ofUnion, State of New Jersey, and CAMPBELL P. HIGGINs, residing atBrooklyn, county of Kings, State of New York, citizens of the UnitedStates, have invented certain new and useful Improvements in Drum-Headsand Manifolds for Seetional SteamBoilers, of which the following is aspecification.

This invention relates to the construction of manifolds and drum-headsfor use in making connection between a drum and a communicating seriesof water-tubes of sectional water-tube steam-boilers; and the saidinvention consists in applying certain novel features of construction tothe said manifolds and heads for the purpose of producing them fromwrought metal and for adapting them to be combined together.

In order to enable others skilled in the art to which our inventionappertains to understand and use the same, we will proceed to describethe features of its construction, having reference to the accompanyingdrawings, and subsequently point out in the appended claims its novelcharacteristics.

Figure 1 is an elevation, partly broken away, of a front drum-head witha manifold connected thereto; Fig. 2, a vertical central section (as m,Fig. 1) of the drumdiead and manifold as arranged for the front of theboiler; Fig. 3, a vertical central section (as m, Fig. 4.) of thedrunrhead and manifold as arranged for the head of the boiler; Fig. at,an elevation, partly broken away, of the rear drumhead and manifold;Fig. 5, a, top view of the rear manifold; Fig. 6, a cross-section, y y,of Fig. 5; Fig. 7, a back view of a manifold, the perforations beingomitted; Fig. 8, an enlarged section of one end of the rear manifoldtaken in the planez z,'Figs. 5 and 6; Fig. 9, a front view of theflanged portion of a drum-head in a plane normal to the axes of theopening; Fig. 10, a side view of the same.

The manifold A, consisting of a polygonal seamless tube having onitsside a flanged opening, a, preferably of oval form, is fixedtransversely to the drum-head B by means of riveting or otherwisesecuring said flanged opening to a corresponding flanged opening, b, ofsaid drum-head, the latter in the present instance being a domed head,to which the invention is particularly applicable. The flanged openingI) of the drum-head lies at an angle intermediate to that of the sidesof the trapezoidal cross-section of the polygonal tube/A.

The ends of the polygonal tube A are closed by means of separate heads,0, welded or otherwise fixed therein.

One flattened side of the tubeA is provided with a series of circularperforations, d, for the reception of the water-tubes, which areexpanded or otherwise fixed therein. For the purpose of entering thetubes at the preferred angle to the axis of the drum it is desirablethat the side having these perforations should stand at a similar angleto the said axis, which necessitates that the angle should be reversedrelatively to the front and rear drumheads. It will be observed that theblank manifold, Fig. 7, having a trapezoidal crosssection, is capable ofbeing connected to the drum-head, as in Figs. 2 and 3, respectively, inreversed positions, the tube-perforations d in the former case beingmade on the sidef of the trapezoid, and in the latter on the sidefthereof, whereby a front and rear drum head may be made with one set ofdies and from the same pieces. In the case of the rear drumhead,when itis desirable that the connectingtubes be accessible by a tube-cleaningimplement through the approximately opposite flattened side of themanifold, the said opposite side is for that purpose provided withperforations d,correspondingto the perforations d, and having a formsuitable for the introduction of hand-hole plates, Figs. 3, 4, and 5.

The portions of the flattened surfaces be tween the perforations d and(2 have, by preference, corrugations or indentations pressed in themetal for the purpose of stiffening these points. The said corrugationsappear in section in Figs. 6 and 8.

What we claim as our invention, and desire to secure by Letters Patent,is-

1. A domed wroughtmetal drum-head with an opening therein flangedoutward for the reception of a manifold, substantially as described.

2. A wrought-metal drum-head with an opening therein flanged outward,.incombination with a wroughtmetal manifold adapted to be attached to saidflanges, substantially as specified.

3. A wrought-metal manifold for a watertnbe boiler formed from apolygonal seamless tube, and provided with a flanged opening, whereby itmay be attached to a drum, substantially as specified.

4. A wrought-metal manifold for a watertube boiler formed from apolygonal seamless tube, and provided with an opening on one side,ineombination with a wroughtmetal drum-head having a correspondingopening, substantially as specified.

5. A wrought-metal manifold for a watertube boiler formed from atrapezoidal tube, and provided with an opening on a side between twoinclined sides, in combination with a drum-head having acorrespondingopening at an intermediate angle to that of the sides of' the trapezoid,substantially as specified.

6. A wrought-metal reversible manifold for water-tube boilers adapted tostand at the same angle to the center line of the drum when reversed andapplied to a reversed head, substantially as specified.

7. A wrought-metal manifold for water-tube steam-boilers of atrapezoidal form in crosssection, with perforations for tubes upon oneand hand-holes upon the other of the nonparallel sides.

8. A wrought-metal manifold having corrugations in the flat sidesthereof, substantially as described.

9. The combination of a wrought metal drum-head and a wrought-metalmanifold, the two being rigidly secured to each other and adapted to beconnected to the shell by riveting the same to the flange of thedrum-head only, substantially as specified.

10. A combined wrought-metal drumhead andmanifold for water-tubeboilers,composed of a flanged drum-head and a flanged manifold,substantially as specified.

GEO. H. BABOOCK. CAMPBELL P. HIGGINS.

Witnesses:

CHAS. W. Fonsns, AUG. CREVELING.

